Chthonocephalus is a genus of annual herbs in the family Asteraceae. The genus is endemic to Australia, with species occurring in all mainland states. Species 1. \n* Chthonocephalus muellerianus P.S.Short 2. \n* Chthonocephalus multiceps J.H.Willis 3. \n* Chthonocephalus oldfieldianus P.S.Short 4. \n* Chthonocephalus pseudevax Steetz - Wooly Groundheads 5. \n* Chthonocephalus spathulatus P.S.Short 6. \n* Chthonocephalus tomentellus (F.Muell.) Benth. 7. \n* Chthonocephalus viscosus P.S.Short